FinnP covered most of it. The bit I would add on fling apps is below.
If you only test one thing on fling apps, make it whether a reported account really disappears.
Took me about 4 weeks on the site to work out that the real question was what the verification step actually proves.
If you're only browsing, that one is fine. The moment whether the sorting can be trusted matters, it changes.
Things worth confirming before you spend a week on fling apps:
- How quickly fling apps starts pushing a paid tier at you
- How many fling apps conversations get past a second reply
- Whether fling apps works at all outside the three biggest cities near you
- How fast a report about fling apps gets a human response
For a second opinion I also cross-checked Luvdate, which came up earlier.