I really appreciate both sites (have no experience of the Mouse Pad). They clearly have different features. One of the things is that TMF is clearly a site in development - with new features added often, links assimilated, statistics kept and what not.
TT is far more established in its content but it is a great place to learn the ins and outs of viewing clips, managing your computer affairs and other things, because they are very helpful with technical information and support. And TT's clip resourse is hard to beat, better than any paysite because it is so varied and informative, as well as inexhaustible in its supply. You meet a lot of the same people there that you also meet here, so I do not see that human relations are that different in the two sites.
The chat room is of course a unique feature, and will certainly help to build a community feeling among the people here who take part in it. This does not include me. I was there only once for a couple of hours. I was propositioned by one guy, who, after an initial disappointment that I was not a woman, asked me to trade clips - which I really have no interest in doing. I never did figure out what you guys actually talk about there. After a few bits of friendly interchange, people seemed to disappear, and that was that.
Here, however, we have the Mainstream lists and Ticklish Celebrity lists, which are a great resourse and made me aware of the forum in the first place - as I am a great movie-goer. And I get the feeling from my participation in the religion and politics forum, that there are people here who want to also meet on a different intellectual level than on TT, but here I could be wrong.
So my final assessment is that the two forums augment one another nicely, and that it would be hard to make a choice.
Thank God we don't need to.