Upload & Sell: Off
It's hard to go wrong with the Canon TC-80N3 time/remote control. I have owned one for years and it works great. However, there are some interesting new products on the market out there that are worth considering if you own a smart phone. The only down side of the TC-80N3 is its price. There are cheaper Chinese knockoffs for sale on eBay that perform almost as well.
I was recently sent a Triggertrap Mobile (http://triggertrap.com) to test. It is essentially a cable that connects your camera to your smart phone and then with the use of an app you are able to do many more things than the Canon TC-80N3 was ever capable of doing, including:
Eased timelapse (Tutorial)
Shock & Vibration sensor
Metal & magnetism sensor
LE HDR (Tutorial & limitations)
LE HDR Timelapse mode
DistanceLapse mode (Tutorial)
Motion detection mode
Cable Release mode
Star trail mode
Bulb Ramping Timelapse
I recently contributed to a project on Kickstarter where a couple of employees from SmugMug were putting together a similar product called the Trigger Happy Remote. It too is for sale online (including Amazon) but DO NOT BUY IT. The people behind this project couldn't be more disorganized and their product has proven flaky according to most reviews. I funded the project in March, cables began to arrive in June, I never received mine, and I basically had to threaten to sue in order to get my money returned. It was a horrible, horrible experience.
I have just begun playing with the Triggertrap Mobile product while making my Montana photography and so far so good. I expect to have a review on my blog sometime within the next two weeks. Bookmark my website and you still see something posted there soon: http://www.toddklassy.com