Why do you say that these are strong brand names? I think all of the names are difficult to remember and spell. I know that finding a name is difficult, but the names of these startups are probably the least impressive aspect.

Wevorce - I doubt that people would remember this name

Startups can use a systematic method of determining if a name is memorable. I think the ability to remember the name and write it down and spell it correctly is the best indicator of a strong name.

I've done this previously by getting a short list of 15 names, then stating them several times in a video (in different orders), then using a crowdsourcing site such as amazon turk, get the person to watch the video and then write down which names they remember. This tests both their ability to remember the name amongst a crowd of other names AND their ability to spell the name. Certain names come way out on top.

Startups need to think very carefully about their name, because I believe the memorability of the name will have a huge impact on their success.