It's kind of a long story. Part of the reason I started this forum was because of what I saw as a precarious situation with the management of the bigger and more popular InkscapeForum.com. Plus, I wanted other features to be available for the community, besides just a forum (tutorials, articles, gallery, for example) and the admin of the other forum wasn't interested in expanding. (At that time, the Inkscape website didn't provide these things either.)
Little did I know, that only a year later, the Inkscape website was about to be developed extensively, providing many of the features that I had tried to set up here at Inkscape Community. I've been helping out with that development, as much as possible -- mostly what I can help with is content, since I don't have any coding skills (except for some simple html).
And more recently, the precarious situation of the other forum reached a critical point where the entire forum was at risk of being lost to spam. (The admin had been absent and out of contact for over 6 months, and there was very little spam prevention, and only one moderator capable of handling it all.) When someone mentioned this situation to the Inkscape Board, the Board decided to explore the idea of having an "official" forum, which would be managed by the community, rather than a 3rd party. We have a small committee that is working out the details of such a forum.
With an official forum having the kind of management that is sustainable, and which would include proper security, together with the development of the website, there is very little need for the kind of features and forum that I've built here in Inkscape Community. So once the official forum is established, I'll be scaling back this website, probably to more of a personal site, but I'm not exactly sure yet.
It won't happen overnight, but eventually, I hope most of the content of this website will be available on the Inkscape website. And it doesn't make sense to me, to maintain a duplicate resource site, when the Inkscape website is finally capable of maintaining the resources. I'd rather be involved in maintaining the resources on the official website.
So I don't know what I'll do with this site yet. It will probably be a gradual transition over a couple of years. I've been thinking about maybe setting up some kind of Inkscape classes. Or maybe trying to find a way to have an online version of Inkscape, where I could maybe have live workshops. Some of us have been talking about making a new Inkscape manual, which would teach Inkscape in a step-by-step way. But we're all so busy currently....
But I keep thinking of what we had when I was in grade school (elementary or primary school, depending on where you live). We had "workbooks". A workbook is a paperbound booklet. It gives instructions, and then provides space below the instructions for the student to write the answer. Or for children learning to write, it has the letters made of dotted lines, where the child can trace over them. Or the math workbooks were very common -- pages and pages of math problems.
Anyway, I'd like to try and make online Inkscape workbooks. But I'd either have a lot to learn about animation or interactive webpages, or somehow have an online version of Inkscape.
Well anyway, for the time being, you could upload your extension into the gallery. Originally I was thinking of having a whole album for extensions. But again, now that the Inkscape website offers that, there's no need. But you could still put in your personal gallery. Or you could make your own thread, like Lazur did here for filters he's made. Technically, he has them hosted at Open Clipart, but they're announced and linked into that topic.
http://forum.inkscapecommunity.com/index.php?topic=329.0 Or you could use attachments instead of hosting on OpenClipart.
You could use the Articles feature for your tutorials and related documentation, and make links between either a forum topic or your gallery, to the articles. Instructions for making tutorials that you want to be hosted here:
http://forum.inkscapecommunity.com/index.php?topic=51.0But, over the next couple of years, I'll be making a push to get it all on the Inkscape website.