I am not all that diligent, but I just use Instapaper. Save all the relevant links (the link itself will say to me if it is a competitor that I must keep an eye

I am not all that diligent, but I just use Instapaper. Save all the relevant links (the link itself will say to me if it is a competitor that I must keep an eye, an interesting prospect, a tip on sales, copywriting advice, a SaaS i will want to use in the future). At the most I separate into two generic folders: code and business.