Sure it's a good endorsement of Ethereum and I'm sure they will contribute code back to the project
Money is formed from public CONFIDENCE that someone else will accept it. The above increases CONFIDENCE, thus it is increases the number of people who are willing to hold it.
Then there are a lot of other reasons to want to hold ETH right now (chart pattern, many developments coming to fruition, BU's attack on BTC, ETH is a high liquidity token).
What software are you using to store the ETH? I assume you aren't leaving them on poloniex.
Is there any lightweight wallet that I can trust to store them a month or two? I have been considering getting some for last couple of days but BTC keeps dipping below $1000 then going up again, and ETH just hit an ATH so I wonder if there will be a dip... thought call. I guess I will get in as soon as I figure out how to safely store the ETH.
I wouldn't like to store another huge blockchain on my HD tho I have enough with Core.