Is the term 'slice of life' overused now?

I am quite a fan of slice-of-life, and it's one of way to decide which anime i should check out... (...first, before i devour the rest later). However lately i have been really annoyed by those being labelled "slice-of-life" anime, but does not provide the calm, slow, heartwarming feelings of SoL. My own definition with slice of life are those from tvtropes: A cast of characters go about their daily lives, making observations and being themselves. Normally without a plot and often are lack in conflicts

Now let's see some that labelled "slice of life" this last few season.

• Denpa Onna: Good anime. However, guys helps out girls with social problem, who then got himself into a harem as he develop more on his own characters. Clannad probably will also be qualified to be slice of life if so
• Hana Saku Iroha: Love angst: checked. Drama plot: checked. Settings with multiples conflicts: checked. The mentioned three happens every episode: checked.
• So-Ra-No-Wo-To: it's comedy, it's mecha, it's drama with a mix of adventure and some romance. Is it a slice of life?

So yes, any comment on this? Because at this rate, i will like to nominate Haruhi to be the most successful slice of life anime out there. Unless Bakemonogatari (or just Monogatari series) also can be qualified to be slice-of-life.... While we are at it, I just want to mention that Madoka is definitely not slice-of-life. Yes, i know it has:
- girls being themselves and enjoy their daily life (only enjoy for first 3 episodes, then being themselves in the last 9),
- a repeating of their ordinary life, literally
- full female cast with some indicates of yuri
- most of the main characters looks like Yuno without the (X |_|)
.... however... hmm actually it could be qualified at this rate.