What's your opinion regarding single word domains suffixed with some sensible digits/numbers like 101 (FAQ), 365 (days), 360 (degrees), 247 (24x7)? For example (random): Atlanta101 Jokes365 Help247 View360 etc. Is it a good idea to register/acquire such domains for long term investment? What do you think?
Yes, those domains can be valuable too. Of corse you can't expect a price so high like a domain without those suffixes but there are many good sales. You can confirm for example here: http://www.dnsaleprice.com/
I think of it in terms of can/will the average person read it as you intend it to be read or not. 247 should commonly read as 24/7, etc, etc; however leet speak (AKA replacing E's with 3's ex: l33t sp34k) is not as recommended, unless your a gamer you're not likely to be familar and read it as such. That and numerals just aren't as valuable in general, with some possible exceptions.
That's right, they can't command a price as high as those without suffix. But nevertheless should be a good catch since we are talking about one word domains.
Well, I would not buy them. Might make sense if you are going to develop them, but I do not see them as an investment.
Not necessarily. They might be "good enough" for YOUR development, but that does not mean that somebody might be willing to pay $$$ for them... I suggest you make a simple business case for these domains. The rule I follow is that if I invest in a domain (registration or purchase) I will keep it for 10 years before I am able to sell it (so the estimated final cost is purchase price +10*reg.fee). I will not invest in anything that I cannot sell for at least 5 times that price. (because there is a risk you never sell it, so some investments protect others). And please be careful... the worst error you can commit is expecting to sell it for many $$$$. Sorry, not going to happen...
You are right. There is lot of risk involved in domaining and unless you strategically minimize it, you'll be in deep soup.