I haven't checked tehm all, but the few that I did check were all flv files. I think what may have happened is that there is sometimes a "Use Download Manager" option. ul.to automatically adds a check in the box so that if you aren't paying attention, you download the exe for their download manager.
I can tell you this...if they have sex in the bedroom during the day, watching them on cam 7 zoomed in is going to be like being in the bed with them (well maybe not that good, but close)
And therein lies the bigger issue. ul.to in and of itself is not a problem (provided you are just looking to dowload a single file), however, the size of the files that are being uploaded are enormous. I can download a full 1080p movie at that size. These need to be converted to flv or mk4 so that it doesn't take 3 hours for a non-premium member to download.
Let's give this a try:
(The Video link associated with this comment is no longer accessible and has been removed).
(just answer the stupid questions/survey with anything and it will start downloading immediately)