I always have been and always will be a firm believer in making time for extracurricular design. Building things no one has yet asked me to build has been one of the most crucial steps for me to actually get asked to then build things for clients. However, your discretion in choosing what to publish to the web and what experiments were merely for the betterment of your own personal critical thinking is paramount to you building the kind of presence you want to have online. I've put out some terrible designs that I'm none too proud to toot about. Problems in execution, lapses in usability judgement, terribly rendered illustration. You name it, I've probably done it. And there's a web history to prove it.
With online publishing granting you immediate access to the masses without the filter of release dates or corporate circulation, you might feel tempted to put work out there for the sake of mere quantity. As designers, (more specifically user interface designers) there's more likely to be a misfire on the user experience side than the design aesthetic side. There's an ocean of fine-looking UIs on Dribbble that fall apart faster than a soggy sandwich when you really get down to the UX.
Remember when you put work out there, you're not just selling your execution. You're selling your concept, your thought process, your solution to actual problems in the design environment. Churning out work that might be aesthetically appealing but a UX nightmare might get you on Dribbble's "Popular" page, that exposure might get you a gig, but it won't force you to make better decisions for the user. Are you really that interested in selling yourself as someone that can take direction and make good designs rather than someone who can wholly think through the entire process and churn out great work as a result?
Your brain (solutions) is more important than your hands (execution).
What if we saw usability as just as, if not more important than the look of our products? What if we curated our portfolios with work that was just as strong in the experience as it was in the packaging?
What if we stopped trying to make a soggy sandwich look like a piece of art?