Twitter and telegram is really a good source of new memes on crypto but its too hard to trust memes this days be very careful theres a lot of honeypot memes on crypto If you are a meme hunter then you what it means. I find new memes on SOLANA chains almost every hour but too risky to buy them incase you cant sell or devs dump on your face. I just continue to accumulate well known memes like shib and bonk rather than buy new ones and crash later.
I also often encounter this. but they don't buy in large quantities, maybe less than $5. They hope that the price of the meme coin they bought will rise drastically because currently the meme coin on the Solana network is hype. It doesn't matter because it's their right, they are the same as playing gambling because the chance of losing money is much greater than the chance of winning 
There are app feeds too aside from the most popular social media platform, they are so informative as well, especially if you are following the experienced guys in the field who will always alert you of new projects, how to go about it and all that. However, it is not about buying the new projects only but buying the right projects, and what I do is to wait until the new coin/token is listed and see the market reaction for a while if I have not pre-bought it before launching. If bought already, the moment it breached a negative line, I liquidated it ASAP. But if it never got to that level so fast, I would wait until a satisfactory earning is made in the first tranche. I will liquidate at this moment and reinvest if it is worth it later. Again, if I've not bought it yet, I study it carefully after launching to see if it is worth it or not, and hours of the launch could help me decide on this, therefore, no rushing still.