As someone who does media compression pretty much daily, your marketing spiel really came out to me badly for the same reasons. While you can optimize JPGs and PNGs in a lossless fashion, you really can't do the same for audio and video. You might be able to make them smaller without losing (much) perceived quality (aka do transparent compression), but you're still doing lossy compression. Same with converting gifs to videos - while the biggest loss certainly happens in the making of the original gif and while you can get a humongous increase in compression quality, converting it to VP8 is still lossy.
And speaking of which, saying that you can get "1000-3000% faster for some files" is also pretty dishonest. You can pretty much claim those kind of numbers with only one of the many formats you support (and one where you're not doing lossless compression), but the way you word it makes it sound like you could get it for potentially anything.
All in all, I'd really suggest you rewrite the description to be more honest.
Two other things I noticed: I can't seem to select text on the homepage (on latest Chrome). Your icon also looks rather similar to that of Miro: http://www.getmiro.com/
I agree. We originally started to simply deal with GIF compression (MediaCrush was previously known as gifquick) and we have less ground to stand on with respect to spectacular compression with support for more formats. I'll reprioritize the "rewrite the spiel" task thanks to feedback from HN.
As for selecting text on the home page, not much we can do about it. We force your focus into a contenteditable div to allow you to paste images/URLs directly into the page.
Regarding the icon, it just so happens that I had the sneaking suspicion that I had seen it before when the designer presented it to me. So I ran a reverse image search and looked at about a thousand similar icons. I didn't find Miro - if I had, I probably would have asked for it to be different. In any case, I think it's different enough that I'm not worried.
And speaking of which, saying that you can get "1000-3000% faster for some files" is also pretty dishonest. You can pretty much claim those kind of numbers with only one of the many formats you support (and one where you're not doing lossless compression), but the way you word it makes it sound like you could get it for potentially anything.
All in all, I'd really suggest you rewrite the description to be more honest.
Two other things I noticed: I can't seem to select text on the homepage (on latest Chrome). Your icon also looks rather similar to that of Miro: http://www.getmiro.com/