Just my two cents, but if the version of the distribution can be used on lower RAM machines (like Vector Light running on 64 MB), let people know about it. I thought I saw mentioned on some of the forum posts that Vector Linux is good for green computing, which means (among other things) reusing old machines instead of throwing them away.
I tried Deli Linux before Vector and Deli is designed for light machines (minimum requirements just went up to 32 MB in last release). It uses an older kernel and uclibc instead of glibc to run faster and be more lightweight. I think Vector has comparable, if not better performance on my 64 MB machine.
When I wanted to upgrade my computer to a distribution with a later kernel, I looked at Puppy and DSL, but they list higher memory requirements than 64 MB on some of their documentation. One of the reasons I decided to try Vector Light is that documentation mentioned it will run in 64 MB. I think you'll draw in some more new users if you do let them know it runs successfully on older systems and what some of the minimum specifications for successfully installing and runnning are. (Installing can sometimes take more memory than running.)
Also, this is probably more appropriate to the 'spread the word' post, but there are forums, wikis, mailing lists, etc. that specifically discuss reusing old computers. We should let them know Vector Linux is one of the better solutions out there. The official documentation should hopefully reflect that information as well.