Posting is absolutely fine. However, it will indubitably be forgotten/lost with the passage of time. We are attempting to remedy that with the Repository. Having the files in one location (actually, 3 as my servers are triangulated) keeping the files organized in directory format and the files consistent helps enormously compared to trying to find a post a year or two down the pike.
If you would like to post your .stl/.stp/.svg/.jpg files please do so... I think your work is great! If in addition you would like to place your files in the Repository and Listed in the Catalog that they may be easily available in-perpetuity send me an email and I will set you up... you will be Credited for all the items you have placed in the Repository.
Whoops! To get a primer on the Repository and how it works... please read the first post here...