it sure is, but it really depends on the project you want to support. If it's one of these scam coins then you have wasted a lot of time just trying to get it promoted and eventually not earning anything out of it. But what if the project is actually descent and has some potential and future in what it wants to accomplish, then you are basically looking at something that can be of quite some value if you keep it. The best thing after earning rewards from bounties is to try to keep them as long as possible, if the project is any good, because that small bounty that you received might be worth so much more in the future. You don't really know unless you try and fail a couple of times, but if one of these projects does deliver what it promises it will definitely make you somewhat richer.